Flexible Silicone Mullen Mouth Bit — Gentle Pressure, Pro-Grade Material

The softest first bit a young horse will meet — or the gentlest retraining for a hard mouth.

Silicone Mullen Mouth Bit — Flexible Silicone Over a Precision Steel Core.

Flexible food-grade silicone moulded over a 304 stainless steel core — the softness your young or sensitive horse needs, without compromise on control.

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Why Mullen Mouth Bit Deserves Its Own Silicone Line

Traditional rubber mullen mouth bits harden, smell and need replacing every 18 months. Our silicone mullen mouth bit keeps the same gentle, straight-bar action — but in food-grade silicone that stays supple for years, never tastes of rubber and passes the same FDA / LFGB compliance as infant pacifiers. The flex is engineered by the mouthpiece geometry, not by compound degradation.

What Makes the Rubbrex Mullen Mouth Bit Different

Gentle Mullen Action

Straight-bar shape distributes pressure across the tongue — no nutcracker.

Food-Grade Core

FDA + LFGB silicone compound — same grade as baby pacifiers.

Odorless & Tasteless

No rubber smell, no metallic taste — horses accept it within sessions.

Steel Core Inside

304 stainless steel core keeps shape; silicone does the softening.

How It's Made

The steel core is CNC-machined to exact mouthpiece curvature, then silicone-over-moulded in a precision injection process. This bonds the silicone permanently to the steel — no delamination, no tooth-separation between silicone and metal. Every bit passes pull-test and surface-leak inspection before leaving the line.

Specifications & Customisation

Standard ring sizes: 125mm (cob), 140mm (full), 155mm (warmblood). Mouthpiece thickness: 16mm standard, 20mm soft-mouth variant. Ring type: standard loose ring; D-ring and full-cheek available on OEM. Standard silicone colour: translucent food-grade or black. Custom Pantone from 2,000 units. MOQ: 500 units standard; 2,000 for custom colour or geometry. Lead time 6-8 weeks ex-factory.